We may need to sleep for up to 80ms: /* First DPCD read after VDD ON can fail if the particular board * does not have HPD pin wired correctly. So if DPCD read fails, * which it should never happen, retry a few times. Target worst * case scenario of 80 ms. */ Switch udelay to msleep to avoid limits on arm. Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index d6f8be654c2e..c17db5c144aa 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -550,7 +550,7 @@ static void read_edp_current_link_settings_on_detect(struct dc_link *link) break; } - udelay(8000); + msleep(8); } ASSERT(status == DC_OK); -- 2.20.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
